Solenoid Valve Type S4A: Features, Specifications & Industrial Applications
Solenoid valves are critical components in automated fluid control systems. Among the various types available, the S4A solenoid valve is widely used in refrigeration systems, industrial automation, and fluid processing applications for its high performance, reliability, and compatibility with a range of refrigerants and pressures.
Whether you're maintaining commercial refrigeration equipment or designing a new fluid handling system, understanding the specifications and advantages of the S4A valve will help ensure optimal performance and longevity.
The S4A solenoid valve is designed for refrigeration, fluid control, and automation systems.
It is compatible with multiple refrigerants and built to handle a wide pressure range.
Parker Refrigerating Specialties offers the S4A valve, available online through IRPC in Canada.
What is solenoid valve type S4A?
The S4A solenoid valve is a direct or pilot-operated valve used for controlling liquid or gas flow. It's commonly used in systems that require precise, automatic control over refrigerant, water, or air.
Manufactured by Parker Refrigerating Specialties, the S4A valve is engineered for durability in refrigeration circuits and industrial systems. Its design supports both normally closed and normally open configurations, depending on the coil and application.
S4A Technical specifications
The S4A valve is built for performance in demanding environments. Here are its general specifications:
These valves are designed to operate across a wide temperature and pressure range, making them ideal for both low and high-temperature refrigeration cycles.
Key features of type S4A valves
Fast actuation: Ideal for applications that require quick opening and closing.
High pressure rating: Handles modern high-pressure refrigerants like R-410A and CO₂.
Corrosion resistance: Durable materials suitable for demanding industrial environments.
Serviceable design: Field-serviceable with replaceable coil and internal parts.
Versatile mounting: Can be installed in various orientations depending on the model.
Applications of S4A solenoid valves
The S4A is used extensively across sectors where reliable fluid control is essential:
Refrigeration: Liquid and suction line control, oil management, defrost circuits.
Food processing: Controls refrigerant in chillers and freezers.
HVAC systems: Used in air handling units, compressors, and condensers.
Industrial automation: Controls non-corrosive gases and liquids in pneumatic systems.
Its rugged build and pressure tolerance make it a standard choice in commercial and industrial refrigeration systems.
Parker S4A installation and maintenance
Proper installation of the S4A valve is essential to ensure long-term performance and safety.
S4A valve installation tips:
Ensure the arrow on the valve body aligns with flow direction.
Avoid installing the coil directly below piping where condensate could drip onto it.
Use proper electrical connectors rated for voltage and current.
S4A valve maintenance tips:
Inspect coils for overheating or buzzing — often a sign of voltage mismatch.
Check for debris in the valve seat if the valve fails to close.
Replace the coil or diaphragm seal if wear is visible or leakage occurs.
Use genuine OEM replacement parts to maintain warranty and performance standards.
S4A vs other solenoid valve types
When comparing S4A to other models like S3A or S5A valve, the primary differences lie in flow capacity and valve size.
Model
Flow capacity
Max pressure
Common use
S3A
Lower
Moderate
Small systems, ice machines
S4A
Moderate–high
High
Commercial refrigeration, cold storage
S5A
Very high
High
Large-scale ammonia systems
The S4A strikes a balance between performance and flexibility, making it suitable for most mid-size to large commercial refrigeration setups.
Summary table: S4A solenoid valve specifications
Feature
Description
Valve size
¼" – 2 1⁄8" ODF/SAE
Pressure range
Up to 680 psi
Temperature range
–40°C to +105°C
Coil voltage options
24V AC/DC, 120V AC, 240V AC
Body material
Brass
Certification
UL, CSA, CE
Applications
Refrigeration, HVAC, food processing
Buying S4A solenoid valves online
Finding the right S4A valve requires knowing your system’s pipe size, voltage, and media compatibility. Look for authorized suppliers that provide OEM components and technical support.
One of the most trusted online sources for Parker S4A valves in Canada is IRPC (Industrial Refrigeration Parts Canada). We offer:
A wide selection of Parker Refrigerating Specialties components
Online ordering with Canadian and US pricing and shipping
Technical support for coil selection and part compatibility
What refrigerants are compatible with Parker S4A solenoid valves?
S4A valves are compatible with most common refrigerants, including R-134a, R-404A, R-507, R-22, R-410A, and ammonia (when properly configured).
Can I replace an S3A valve with an S4A valve?
Yes, depending on the system’s pressure, temperature, and flow requirements. Always confirm the valve’s Cv rating and size match your application.
Where can I get technical drawings or datasheets for S4A valves?
You can download PDFs directly from Parker’s website or request them from IRPC’s product support team.
Do you ship S4A valves across Canada and the USA?
Yes, IRPC ships S4A across North America with tracking and can also arrange expedited service upon request.
How do I verify coil voltage when ordering replacements online?
Check the coil label on your existing valve. It should list the voltage, frequency, and wattage. Match this exactly when ordering a replacement to ensure safe operation.
